I have... Who has... Expanded Notation is a fun game for students to play in an elementary school setting. It is perfect to play as a whole class since there are 30 cards. This would be a great review game and it is very interactive and fast paced.
Students take turns reading and answering questions. I sometimes have my students stand in a circle while we play. After they have read their card, they sit down. This helps manage the game.
I also time my students and have them try to beat their time the next time we play.
A wonderful way to practice expanded notation.